Ocean Composition
What 3 ways does salinity DECREASE?
1.) Fresh water, such as a river, flowing into the ocean; river runoff, & precipitation (rain). 2.) Colder climates 3.) Glaciers MELTING adding freshwater to the oceans.
What 3 ways does salinity INCREASE in the oceans?
1.) hotter, tropical, drier climates 2.) high evaporation rates 3.) glaciers FORMING
Colder water has ___________________ density?
HIGHER
Warmer water has ___________________ density?
LOWER
Why does the Dead Sea have such high salinity?
Mainly due to the higher evaporation rate but also due to it mostly being landlocked
How does ocean water differ from freshwater?
Ocean water has a higher salinity than freshwater.
What are the 2 most abundant chemicals in ocean water?
Sodium and Chlorine
What is salinity?
a measure of the amount of dissolved solids in a given amount of liquid
What affects salinity?
climate & slow moving waters
Salt makes seawater more____________________ than freshwater?
dense
Oceans with higher salinity also have higher_____?
density
What adds salt to oceans?
underwater volcanoes & weathering/erosion of rocks
Where does salt come from?
weathering and erosion of rocks rain and dissolved salts and minerals that are deposited in the ocean